Package org.teiid.query.optimizer.relational.rules

Source Code of org.teiid.query.optimizer.relational.rules.TestJoinRegion

/*
* JBoss, Home of Professional Open Source.
* See the COPYRIGHT.txt file distributed with this work for information
* regarding copyright ownership.  Some portions may be licensed
* to Red Hat, Inc. under one or more contributor license agreements.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
* 02110-1301 USA.
*/

package org.teiid.query.optimizer.relational.rules;

import java.util.ArrayList;
import java.util.List;

import org.teiid.query.optimizer.relational.plantree.NodeConstants;
import org.teiid.query.optimizer.relational.plantree.NodeFactory;
import org.teiid.query.optimizer.relational.plantree.PlanNode;
import org.teiid.query.optimizer.relational.rules.JoinRegion;
import org.teiid.query.optimizer.relational.rules.RulePlanJoins;
import org.teiid.query.sql.lang.JoinType;


import junit.framework.TestCase;

public class TestJoinRegion extends TestCase {
   
    public void testFindJoinRegions() {
       
        List regions = new ArrayList();
       
        PlanNode joinRoot = TestFrameUtil.getExamplePlan();
       
        PlanNode joinRoot1 = TestFrameUtil.getExamplePlan();
       
        PlanNode outerJoin = NodeFactory.getNewNode(NodeConstants.Types.JOIN);
       
        outerJoin.setProperty(NodeConstants.Info.JOIN_TYPE, JoinType.JOIN_LEFT_OUTER);
       
        outerJoin.addFirstChild(joinRoot);
        outerJoin.addFirstChild(joinRoot1);
       
        PlanNode source = NodeFactory.getNewNode(NodeConstants.Types.SOURCE);
       
        source.addFirstChild(outerJoin);
       
        RulePlanJoins.findJoinRegions(source, null, regions);
       
        assertEquals(3, regions.size());
       
        JoinRegion region = (JoinRegion)regions.get(0);
       
        //ensure that the first region is the trivial region of the outer join
        assertEquals(1, region.getJoinSourceNodes().size());
    }

    public void testReconstruction() {
       
        List regions = new ArrayList();
       
        PlanNode joinRoot = TestFrameUtil.getExamplePlan();
       
        PlanNode source = NodeFactory.getNewNode(NodeConstants.Types.SOURCE);
       
        source.addFirstChild(joinRoot);
       
        RulePlanJoins.findJoinRegions(source, null, regions);
       
        assertEquals(1, regions.size());
       
        JoinRegion region = (JoinRegion)regions.get(0);
       
        assertEquals(3, region.getJoinSourceNodes().size());
       
        assertEquals(joinRoot, region.getJoinRoot());
       
        region.changeJoinOrder(new Object[] {new Integer(1), new Integer(0), new Integer(2)});
       
        region.reconstructJoinRegoin();
       
        PlanNode root = region.getJoinRoot();
       
        assertEquals(NodeConstants.Types.JOIN, root.getFirstChild().getType());
       
        //the tree is now left linear so go down a couple of levels to get to the first source
        assertEquals(NodeConstants.Types.SOURCE, root.getFirstChild().getFirstChild().getFirstChild().getType());
    }
   
    /**
     * Simple test to ensure that the reconstruction logic doesn't fail with a single source
     */
    public void testReconstructionOf1Source() {
       
        PlanNode source = NodeFactory.getNewNode(NodeConstants.Types.SOURCE);
       
        PlanNode accessNode = NodeFactory.getNewNode(NodeConstants.Types.ACCESS);
       
        source.addFirstChild(accessNode);
       
        JoinRegion region = new JoinRegion();
       
        region.addJoinSourceNode(accessNode);
       
        region.reconstructJoinRegoin();
       
        assertEquals(NodeConstants.Types.ACCESS, region.getJoinRoot().getType());
    }
   
}
TOP

Related Classes of org.teiid.query.optimizer.relational.rules.TestJoinRegion

TOP
Copyright © 2015 www.massapi.com. All rights reserved.
All source code are property of their respective owners. Java is a trademark of Sun Microsystems, Inc and owned by ORACLE Inc. Contact coftware#gmail.com.